You’ve read all of your free items this month. To register, get added benefits and unlimited access to articles, Become a Member. Already a Member? Sign in. Advertising Age Article Abstract Obama Family Portrait is Most Viral Facebook Content of 2012 Field Ron Paul Campaign Has Greatest 'Viral Reach' By Cotton Delo, Published on January 03, 2012 1 Want more Access, Content & Connections? Upgrade to Membership. We are glad you are enjoying Advertising Age. To get uninterrupted access and additional benefits, become a member today. Register Now Already a member? Log in.